I've got lavender from chocolate and blue genes but i'm pretty sure when the blue doubles to give you silver plus blue fawn can give you lavender, because i just got lavender babies and i dont think I've ever had a lavender in the line, i may have buts its a slight chance like tiny little smallest chance ever and the parents weren't even lavender so it would be like a grandparent... and even then only a slight, very slight chanceActually you will only get lavender if your birds carry the gene. It can't be created from blues two blue genes gives you a silver.